Friðrik Margrétar
type: MusicGroup
popularity: 3
followers: 70
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7e70a9356aaaec0540f02e104be7b1ea5a66ffd8672f7f56725dc3b974e29d59
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab36aaab-61af-4805-8e53-237bc929c0df.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab36aaab-61af-4805-8e53-237bc929c0df.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ab36aaab-61af-4805-8e53-237bc929c0df
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7e70a9356aaaec0540f02e104be7b1ea5a66ffd8672f7f56725dc3b974e29d59","name":"Friðrik Margrétar","registered_at":"2026-06-20T09:52:58Z","symbol":"NIM1584581","token_address":"0xc18505fdac29d3a29202458916993a0042af66b4","type":"artist","uuid":"ab36aaab-61af-4805-8e53-237bc929c0df"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e70a9356aaaec0540f02e104be7b1ea5a66ffd8672f7f56725dc3b974e29d59. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab36aaab-61af-4805-8e53-237bc929c0df.json and https://artists.proofprofile.net/proofs/artist/ab36aaab-61af-4805-8e53-237bc929c0df.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0x7e70a9356aaaec0540f02e104be7b1ea5a66ffd8672f7f56725dc3b974e29d59","name":"Friðrik Margrétar","registered_at":"2026-06-20T09:52:58Z","symbol":"NIM1584581","token_address":"0xc18505fdac29d3a29202458916993a0042af66b4","type":"artist","uuid":"ab36aaab-61af-4805-8e53-237bc929c0df"}
album: Skipholt
  type: MusicAlbum
  date published: 2020-02-21
album: Kärlek är sval som snö (Original Soundtrack)
  type: MusicAlbum
  date published: 2023-04-07